CVE-2026-92553

The YaySMTP – WP Mail SMTP with Email Logs, Tracking & Reports plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.7.7 via the putFile function. This is due to insufficient file type validation in the putFile function, as sanitize_file_name() does not strip executable extensions and no allow-list, MIME check, or safe-extension rename is applied. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. The only server-side guard is a .htaccess file containing 'Require all denied' written by writeGuards(), which is silently ignored by nginx and by Apache configured with AllowOverride None, meaning RCE is fully achievable on those server configurations.

• CWE-434

• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L106
• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L178
• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L542
• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/EmailLogAttachments.php#L549
• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/Helper/Utils.php#L814
• https://plugins.trac.wordpress.org/browser/yaysmtp/tags/2.7.7/includes/PluginCore.php#L37
• https://plugins.trac.wordpress.org/changeset/3739875/yaysmtp/trunk/includes/Helper/EmailLogAttachments.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4abbf148-4648-440c-8a82-cf68bf051fbe?source=cve

Published

Oct 16, 2026

Last Modified

Oct 16, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-92543Docker Engine classifies a registry hostname as insecure usi…7.6
• CVE-2026-92546Authentication bypass by spoofing vulnerability in Keepnet L…7.5
• CVE-2026-92548The WP Popular Posts plugin for WordPress is vulnerable to S…5.3
• CVE-2026-9255Missing input source validation in the tool authorization pr…8.4
• CVE-2026-92550A pre-authentication attacker could leverage type size/count…7.5
• CVE-2026-92551The Paid Membership Plugin, Ecommerce, User Registration For…6.1
• CVE-2026-92554The ShopLentor – All-in-One WooCommerce Growth & Store Enhan…6.1
• CVE-2026-92555Insertion of sensitive information into sent data vulnerabil…9.8
• CVE-2026-92559IBM App Connect Enterprise 13.0.1.0 through 13.0.8.2 could a…9.8
• CVE-2026-9256NGINX Plus and NGINX Open Source have a vulnerability in the…8.1
• CVE-2026-92560A pre-authentication attacker could leverage type size/count…7.5
• CVE-2026-92561The Booking Calendar plugin for WordPress is vulnerable to R…6.1